Anti-loosening safe intravenous infusion needle
By designing a protective tube and a snap-fit assembly on the intravenous infusion needle, the problem of easy loosening of the infusion needle is solved, achieving a stable connection and safe use, and avoiding waste of medication and needlestick injuries.
Patent Information
- Application Number
- CN202520263466.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Existing intravenous infusion needles are prone to loosening, posing safety hazards such as wastage of medication and needlestick injuries.
A safe intravenous infusion needle designed to prevent loosening is used. The needle tip is fixed to the rubber parts of the infusion set by a protective tube and a snap-fit assembly. The snap-fit assembly and the slider work together to ensure a secure connection of the needle tip, prevent loosening, and protect the needle tip when not in use.
It achieves a stable connection of the infusion needle, avoiding the risks of loosening and needlestick injury. The structure is simple and easy to operate.
Smart Images
Figure CN223774128U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to intravenous infusion needle technical field, concretely is a safety type intravenous infusion needle of anti -loosening. BACKGROUND
[0002] In the infusion set design, a puncturable rubber piece is usually connected in the pipeline, located at the upper part of the infusion set filter screen, used for intravenous bolus injection of drugs or temporary injection of drugs during infusion, and also can make the drug solution pass through the lower filter screen during the bolus injection to reduce the risk of harmful particles entering the blood circulation. Medical staff usually use a disposable intravenous infusion needle to connect the needle cylinder of intravenous bolus injection of drugs, and then insert the infusion needle into the rubber piece. This has the risk of not being easy to fix and the infusion needle head being easy to come out of the rubber piece, which can easily cause drug solution waste. At the same time, there is a risk of needle stick injury when inserting and pulling out the needle before and after the bolus injection of the drug solution. SUMMARY
[0003] In view of the deficiencies of the prior art, the utility model provides a safety type intravenous infusion needle of anti -loosening, which makes the infusion needle head not easy to come off after being inserted into the rubber piece of the infusion set, and the needle head of the infusion needle will not stab the person when not in use or after use.
[0004] A safety type intravenous infusion needle of anti -loosening, comprising an infusion needle body, the infusion needle body comprises a needle head and a needle handle, characterized by a protective tube connected outside the needle head and the needle handle, one end of the protective tube close to the needle head can wrap the fixing ring outside the rubber piece of the infusion set, a buckle assembly for fixing with the outer wing of the fixing ring is connected outside the protective tube wall, a strip-shaped port for sliding of the handle wing of the needle handle is opened on the protective tube wall where the strip-shaped port is located, a sliding groove is opened on the protective tube wall where the strip-shaped port is located, and a sliding block is slidably connected on the sliding groove.
[0005] Preferably, the buckle assembly comprises two fixed blocks, an L-shaped connecting ring, a push block and a torsional spring, the two fixed blocks are fixed on the protective tube wall, the L-shaped connecting ring passes through the two fixed blocks and rotates around the two fixed blocks, one end of the L-shaped connecting ring close to the strip-shaped port is connected with the push block, the L-shaped connecting ring is sleeved with the torsional spring between the two fixed blocks, the torsional arm at one end of the torsional spring abuts against the push block, and the torsional arm at one end abuts against the protective tube wall.
[0006] Preferably, the number of the buckle assembly is two and they are symmetrically distributed on the protective tube wall.
[0007] Preferably, the handle wing of the needle handle is a pair and symmetrically distributed on the needle handle.
[0008] Preferably, the sliding groove and the strip-shaped port are vertically arranged and the sliding groove is located at the middle of the strip-shaped port.
[0009] Preferably, the outer surface of the sliding block is fixedly connected with an anti -skid strip.
[0010] Compared with the prior art, the utility model has the following beneficial effects:
[0011] The safety type intravenous infusion needle with the anti-loosening function, when in use, the protective tube at the end with the needle is connected to the fixing ring outside the rubber part of the infusion device, then the buckle assembly is used to fix the protective tube and the outer wing of the fixing ring, thus the infusion needle body and the fixing ring are fixed, after the fixing is completed, the slide block is rotated to cancel the limiting of the handle wing of the needle handle, the needle handle is pushed to slide forward in the strip-shaped opening and drives the needle to be inserted into the rubber part of the infusion device, finally the slide block is rotated to limit the handle wing of the needle handle, the infusion needle body is taken off from the infusion device, and vice versa, the whole setting makes the needle of the infusion needle not easy to be loosened after being inserted into the rubber part of the infusion device, and the needle of the infusion needle will not hurt people when not in use or after use, in addition, the whole device has simple structure and is convenient for the operation personnel to use. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a structure schematic view of the whole and part components of the safety type intravenous infusion needle with the anti-loosening function and the infusion device of the utility model;
[0013] Figure 2 It is an explosion schematic view of the whole of the safety type intravenous infusion needle with the anti-loosening function of the utility model;
[0014] Figure 3 It is a structure schematic view of the buckle assembly of the safety type intravenous infusion needle with the anti-loosening function of the utility model;
[0015] Figure 4 It is a safety type intravenous infusion needle with the anti-loosening function of the utility model; Figure 1 The structure schematic view of another perspective.
[0016] In the drawing: 1, infusion needle body; 2, needle; 3, needle handle; 4, protective tube; 5, fixing ring; 6, outer wing of fixing ring; 7, buckle assembly; 701, fixed block; 702, L-shaped connecting ring; 703, push block; 704, torsional spring; 8, strip-shaped opening; 9, sliding groove; 10, slide block; 11, anti-skid strip. DETAILED DESCRIPTION
[0017] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0018] As Figure 1 , Figure 2 and Figure 4As shown, a safety type intravenous infusion needle with anti-loosening function comprises an infusion needle body 1, the infusion needle body 1 comprises a needle head 2 and a needle handle 3, the needle head 2 and the needle handle 3 are externally connected with a protective tube 4, the protective tube 4 is wrapped around a fixing ring 5 outside a rubber member of an infusion device at one end close to the needle head 2, the protective tube 4 is externally connected with a buckle assembly 7 for fixing with an outer wing 6 of the fixing ring, a strip-shaped opening 8 is formed on the protective tube 4 for sliding of a handle wing of the needle handle 3, a sliding groove 9 is formed on the outer wall of the protective tube 4, and a sliding block 10 is slidably connected to the sliding groove 9.
[0019] Specifically, in use, the needle head 2 is sleeved on the fixing ring 5 outside the rubber member of the infusion device at one end of the protective tube 4, and then the protective tube 4 is fixed with the outer wing 6 of the fixing ring by using the buckle assembly 7, so that the infusion needle body 1 can be fixed with the fixing ring 5, after the fixing is completed, the sliding block 10 is rotated to cancel the limiting of the handle wing of the needle handle 3, the needle handle 3 is pushed, and the needle handle 3 will slide forward in the strip-shaped opening 8 and drive the needle head 2 to be inserted into the rubber member of the infusion device, and finally the sliding block 10 is rotated to limit the handle wing of the needle handle 3, the infusion needle body 1 needs to be removed from the infusion device, and vice versa. The whole setting makes the needle head 2 of the infusion needle not easy to loosen after being inserted into the rubber member of the infusion device, and the needle head 2 of the infusion needle will not hurt people when not in use or after use. In addition, the whole device has simple structure and is convenient for operators to use.
[0020] As shown in Figure 3 , the buckle assembly 7 comprises two fixed blocks 701, an L-shaped connecting ring 702, a push block 703 and a torsional spring 704, the two fixed blocks 701 are fixed on the outer wall of the protective tube 4, the L-shaped connecting ring 702 passes through and rotates around the two fixed blocks 701, the push block 703 is connected to one end of the L-shaped connecting ring 702 close to the strip-shaped opening 8, the torsional spring 704 is sleeved between the two fixed blocks 701, one end of the torsional spring 704 abuts against the push block 703, and the other end of the torsional spring 704 abuts against the outer wall of the protective tube 4.
[0021] Specifically, the L-shaped connecting ring 702 and the push block 703 are an integral piece, in use, the L-shaped connecting ring 702 is opened by pressing the push block 703 at both ends of the protective tube 4, then the protective tube 4 is sleeved on the fixing ring 5 outside the rubber member of the infusion device, and then the push block 703 is released, and the torsional spring 704 will return to the original state after the external force disappears, so that the outer wall of the protective tube 4 can be fixed with the outer wing 6 of the fixing ring, if it is needed to cancel the connection and fixation between the protective tube 4 and the fixing ring 5 outside the rubber member of the infusion device, vice versa.
[0022] As shown in Figure 1 , Figure 2 and Figure 4As shown in the drawings, the number of buckle assemblies 7 is two and symmetrically distributed on the outer wall of the protective tube 4.
[0023] Specifically, by setting the number of buckle assemblies 7 to be two and symmetrically distributed on the outer wall of the protective tube 4, the fixing force between the protective tube 4 and the outer wing 6 of the fixing ring is more balanced, and the stress balance helps to improve the stability and service life of the infusion needle body 1 and related components in the infusion device.
[0024] As shown in the drawings, Figure 1 , Figure 2 and Figure 4 , the handle wings of the needle handle 3 are a pair and symmetrically distributed on the needle handle 3.
[0025] Specifically, by setting the handle wings of the needle handle 3 to be a pair and symmetrically distributed on the needle handle 3, the needle 2 and the needle handle 3 are placed more stably in the protective tube 4, and when the needle handle 3 needs to be pushed, the handle wings of the needle handle 3 slide more smoothly on the strip-shaped opening 8, facilitating the stable insertion of the needle 2 into the rubber piece or the extraction of the needle 2 from the rubber piece.
[0026] As shown in the drawings, Figure 1 , Figure 2 and Figure 4 , the sliding groove 9 is vertically arranged with the strip-shaped opening 8 and the sliding groove 9 is located at the middle of the strip-shaped opening 8.
[0027] Specifically, by setting the sliding groove 9 to be vertically arranged with the strip-shaped opening 8, the sliding of the sliding block 10 is facilitated and the limiting of the handle wings of the needle handle 3 by the sliding block 10 is facilitated, the unused infusion needle body 1 or the used infusion needle body 1 has the handle wings of the needle handle 3 located on the right side of the sliding block 10 and the needle 2 is inside the protective tube 4, and the infusion needle body 1 in use has the handle wings of the needle handle 3 located on the left side of the sliding block 10, and by setting the sliding groove 9 to be located at the middle of the strip-shaped opening 8, the use of the sliding block 10 by the user in different situations is facilitated.
[0028] As shown in the drawings, Figure 2 , the outer surface of the sliding block 10 is fixedly connected with the anti-skid strip 11.
[0029] Specifically, by setting the anti-skid strip 11, the friction between the hand and the sliding block 10 can be increased, facilitating the pushing of the sliding block 10. It should be noted that there is sufficient friction between the sliding block 10 and the sliding groove 9, and the sliding block 10 will not slide or shift by itself without external force.
[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A safety type intravenous infusion needle with anti-loosening, comprising an infusion needle body (1), the infusion needle body (1) comprising a needle head (2) and a needle handle (3), characterized in that, The needle (2) and needle handle (3) are externally connected with a protective tube (4), the end of the protective tube (4) close to the needle (2) can wrap the fixing ring (5) outside the rubber part of the infusion device, the outer wall of the protective tube (4) is connected with a buckle assembly (7) for fixing the outer wing (6) of the fixing ring, the strip-shaped port (8) for sliding the handle wing of the needle handle (3) is arranged on the wall of the protective tube (4), the outer wall of the protective tube (4) where the strip-shaped port (8) is arranged is provided with a sliding groove (9), and the sliding groove (9) is slidably connected with a sliding block (10).
2. The safety type intravenous infusion needle according to claim 1, wherein The buckle assembly (7) comprises two fixed blocks (701), an L-shaped connecting ring (702), a push block (703) and a torsional spring (704), the two fixed blocks (701) are fixed on the outer wall of the protective tube (4), the L-shaped connecting ring (702) passes through the two fixed blocks (701) and rotates around the two fixed blocks (701), the end of the L-shaped connecting ring (702) close to the strip-shaped port (8) is connected with the push block (703), the part of the L-shaped connecting ring (702) located between the two fixed blocks (701) is sleeved with the torsional spring (704), the torsional arm at one end of the torsional spring (704) abuts against the push block (703), and the torsional arm at one end abuts against the outer wall of the protective tube (4).
3. The anti-dislodgement safety intravenous infusion needle of claim 1 or 2, wherein, The number of the buckle assembly (7) is two and the two buckle assemblies are symmetrically distributed on the outer wall of the protective tube (4).
4. The anti-dislodgement safety IV spike of claim 1 or 2, wherein, The handle wing of the needle handle (3) is a pair of wings and is symmetrically distributed on the needle handle (3).
5. The anti-dislodgement safety IV spike of claim 3, wherein, The handle wing of the needle handle (3) is a pair of wings and is symmetrically distributed on the needle handle (3).
6. The safety type intravenous infusion needle according to claim 1, 2 or 5, wherein The sliding groove (9) is vertically arranged with the strip-shaped port (8) and the sliding groove (9) is located at the middle of the strip-shaped port (8).
7. The anti-dislodgement safety IV spike of claim 3, wherein, The sliding groove (9) is vertically arranged with the strip-shaped port (8) and the sliding groove (9) is located at the middle of the strip-shaped port (8).
8. The safety type intravenous infusion needle according to claim 1, 2, 5 or 7, wherein The outer surface of the sliding block (10) is fixedly connected with an anti-skid strip (11).
9. The anti-dislodgement safety IV spike of claim 3, wherein, The outer surface of the sliding block (10) is fixedly connected with an anti-skid strip (11).